Uncurling guide



Sept' 23, 1941 H. HAcKLAN-DER 2,256,672

UNCURLING GUIDE Original Filed Sept. :22, 1959 Patented Sept. 23, 1941UN CURLING GUIDE Hans Hacklandcr, Linden, N.- J.,assignorto The' SingerManufacturing Company,

Elizabeth,

N.'J.,"a corporation of New Jersey Original..application...eptembery22,1 193.9,l Serial f 296,031. Divided and fsthis application-yNovember 13, 1939, Serial No.y 303,946

8 Claims; (Cl. HL2-20) Thisinvention relates to fabric guides for sewingmachinesand more particularlyto uncurling guides for hosiery vseamingsewing machines.A

The primary object` of the present invention is theprovision ofT animproved latching device` for-locking-the uncurling guide in operativeor retracted-position... l A

Another object of .this invention is to provide a latcliing Vdevicecomprising two latches each having its own control-leverl whereby therespective; latches :may be alternately shifted into inoperativepositions.

With the above and other objects in View, as

will hereinafter appear, the rinvention comprises the devicesrcombinations, and arrangements of parts hereinafter set forth andillustrated in the accompanying drawing Aof a preferred embodiment'of-the invention, from which the several features of the invention andthe advantages attained-thereby will be readily understood bythose-skilled in the art.

In the accompanying drawing, Fig. 1 is a front elevation of the upperportion of the machinefrarnefshowing-l the uncurling device in itsoperative position (full lines) andin its inoperative position (dottedAlines) Fig; 2 is a disassembled perspective viewi showingthel-va-riouselements of the uncurling guide iatching deviceN and themeanspfor releasing the same.

Fig. 3 is a front elevation of .the ,uncurling guide .latching devicewith the control-arms partiallybrcken away to show the` relativepositions of :the-latches-when the guide is in operative position..r

Fig-4 is a view-similar to Fig. V3, showing the relativepositionsv ofthe latches: when the guide is ininoperative position.

Inatheembodiment of the invention selected for. illustration my improveduncurling guide is shown asfapplied to a so-called cup-feedsewing..machine.having.a standard li and an overhanging bracket 2 fromwhich depends theun.-

my .copending application Serial No. 296,031, filed` September. 22,,1939,:of which .this application is a division:`v-

The uncurlingguide illustrated-includes a central guiding plate 4terminating at its upper end in a supporting head-portion 5f Disposed onopposite sides ofthe guiding rplate adjacent itslower end are uncurlers6 yieldinglypressed bytheusual spring I against the faces of the guidingplate. Tfhevmounting` for the uncurling guide is identical withVthatshown and described in my copending application Serial No. 303,947,

iiledNovember 13, 1939.-

Referring to Fig. 2, it will be seen that the. supporting head4 5 of thecentral guiding plated is formed with a bearing aperture 8 through whichprojects a cylindrical bossv 9 formed upon a stationary locking disk I9.The lockingdisk is supported sothat its boss 9 is rigidly4 fastened faceto face-to a verticalplate I I by a bolt I2, with the head 5 of thecentral-guiding plate 4 interposed between .thefverticalplate Il and thelocking diskv iii... To permit the central guiding plate ll totur-nfreely uponthe boss 9, 'the width of said bossis slightly in excess ofthethi-ckness of the central guiding plate.

To positively. hold. the uncurling guide in set positionsthelockingdisk.- Il] is formed with two stop-notches` I3 and I4. d, Cooperatingwith these stop-notches are twolpivotalflatches l5 and It` biased towardeach otherbya coil-spring I'I connectecl by shouldered screws I8- and i9to the freeends of the latches.. aperturcd-as at 2li. and -2I to receivea fulcrumstud ZZfthreaded intoan ear 23-formed on the i head 5 ofthecentralguidingzplate A.' Latch I5 has secured to it by screwsl and 2liya control.-

f lever ZElhaVing at-its free Yend an odset fingerpiece l2&3.4 Latch I6has similarly secured to it byjscrews I9 vand 21,V a control-lever 28having at itszfree. end an offsetnger-piece 29.` The two control-levers25 and 28 cross each other, .the control-lever 28 being bent as at 30 toprovide clearance for 4the control-'lever 25, rwhereby independentmovement of one control-lever will not interferewith the othercontrol-lever.

Referring `now to Fig. `.1, it willbeunderstood that the uncurling,guideis shown `in full. lines in its normaloperative position. In suchpositionthelatch I5 is disposed inA the'notchV i3 in the lockingr diskIl), A.see Fig. 3, while thelatch I8 rides on the peripheryl of thelocking disk, the'latch yI5 being held inthe notch I3 by the coil-springI1. Whenit is'desired to `shiftthe uncurling guide, out of operativeposition "andi into the position shown `indotted lines ,in Fig. l,

pressurais .manuall-yaapplied fin an.. upward direca tionrupon thedinger-:piece :2 6;;iof1the control-lever;

The two latches are 25, which lever in response to this pressure movesin a counterclockwise direction and the initial with and enters theVnotch I4 in the locking disk.

During this turning of the guide the latches I5 and I6 ride upon theperiphery of the locking disk I I?, the coil-spring I1 beingsufficiently strong so that pressure on the control-lever 25 in a Ycounterclockwise direction will not tend'to lift the latch I5 oi theperiphery of the locking disk I0, but will effect a substantial rigidconnection between the control-lever 25 and the guide.

When it is desired to return the uncurling guide vto operative position,such asfshown in full lines in'` Fig. l, pressure is manually applied ina downward direction upon the finger-piece 29 ofv the control-lever 28,which lever inV response tol this pressure-moves in a clockwisedirection, thereby rst moving the latch I6' out of thej notch I4 and,secondly, turning the guide about the boss 9 until the latch I5registers with and 'Ihe- 301' moving the guide when operated in onedirecenters the notch I3 in the locking disk IB.-

two control-levers 25 and 28 are designed for` independent Yoperationand when it is desired to move the guide into inoperative position con-Mtrol-lever 25 is operated, and when it is desired to return the guide tooperative position controllever 28 is operated.

From the above description, it will be apparent that an uncurling guidehas been provided having means`v including two latches, each having itsown control-lever for positively locking the guide in or out ofoperative position. In the embodiment chosen for illustration, thecontrol levers 25 and 28 are each formed of sheet-metal and each isremovably secured to its respective latch by means of screws. Obviouslythe control-levers may be formed integral with the latches withoutdeparting from the invention. In Figi, it will be seen that the freeends of the control-levers, when the guide is in operative position, arepreferably positioned in advance of the guide so that the operator mayconveniently strike the control lever 25 with an upward movement of thehand to shift the guidev into inoperative or 1. A fabric guide forsewing machines having an operativeand an inoperative position, 'meansfor supportingrsaid guide whereby it may be moved'from one to the otherof said positions,

a latch for holding said guide in operative posi-` tion, a control-leverfor releasing said latch and moving the guide when operated in onedirection, a second latch for holding said guide in inoperativeposition, and a second control-lever for releasing said second latch andmoving th-e guide when operated in one direction.

r2. Afabricr guide for sewing machines havingy 75 be moved from one tothe other of lsaid positions,v

anoperatve and an inoperative position, means for supporting said guidewhereby it may be moved from one to the other of said positions, astationary locking disk, a latch cooperating with said locking disk forholding said guide in opera- 5 tive position, a control-lever forreleasing said latch and moving the guide when operated in onedirection, a second latch cooperating with said locking disk for holdingsaid guide in inoperative position, and a second control-lever forreleasing 10 said second latch and moving the guide when operated in onedirection.

3. A fabric guide for sewing machines having an operative and aninoperative position, means for supporting said guide whereby it may bemoved from one to the other of said positions,

a latch for holding said guide in operative position, a control-leversecured to said latch for releasing the same and moving the guide whenoperated in one direction, a second latch for holding said guide ininoperative position, and a second control-lever secured to said secondlatch for releasing the same and moving the guide when operated in onedirection. f

4. A fabric guide for sewing machines having "an operative and aninoperative position, means for supporting said guide whereby it may beYmoved from one to the Vother of said positions, a latch for holding saidguide in operative position, a control-lever for releasing said latchand tion, a second latch for holding said guideln inoperative position,and a secondcontrol-lever for releasing said second latch and moving theguide when operated in one direction, said conztrol-levers crossing eachother with their free ends in proximity to each other for convenientmanipulation by the operator.

5. A fabric guide for sewing machines having an operative and aninoperative position, means 'for supporting said guide whereby it may be5 moved from one to the other of said'positions,

a latch for holding said guide in operative position, a control-leverfor releasing said latch and moving the guide when operated in onedirection,

, second latch for holding said guide in inoperative position, a secondcontrol-lever for releasing said second latch and moving the guide whenkY operated in one direction, and a spring acting between said iirst andsecond latches for yieldingly maintaining the respective latch in itsmoved from one to the other of said positions,

a latch fulcrumed on and movable with said guide for holding it inoperative-position, a controllever for releasing said latch and movingthe guide into inoperative position when manually operated in onedirection, a second latch fulcrumed on and movable with said guide forholding it in inoperative position, and a second conf trol-lever forreleasing said second latch and moving the guide into operative positionwhen 55 manually operated inthe opposite direction, said control-levershaving their extremities disposed so that an upward movement of theoperators hand Vcan move the guide into inoperative position and adownward movement of the operators hand can move the guide intooperative position.

7. A fabric guide for sewing machines having an'operative and aninoperative position, said fabric guide including a central guidingplate, Arneans for supporting said guide whereby it may.

a latch fulcrumed on said central guiding plate and serving to lock saidguide in operative position, a second latch fulcrumed on said centralguiding plate and serving to lock said guide in inoperative position,and aI pair of control-levers each one of which is secured to itsrespective latch, said control-levers crossing one another and disposedso that an upward movement of the operators hand against onecontrol-lever will release its latch and move the guide into inoperativeposition and a downward movement of the operators hand against the othercontrollever will release its latch and move the guide into operativeposition.

8. In a sewing machine uncurling guide having an operative and aninoperative position, a central guiding plate, means for supporting saidcentral guiding plate whereby the guide may be moved from one to theother of said positions, a

stationary disk having a plurality of stop-notches formed therein, alatch fulcrumed upon said central guiding plate and cooperating with oneof said stop-notches inisaid stationary disk to lock said guide inoperative position, a second latch fulcrumed on said centralguidingplate and cooperating wth another of said stop-notches in saidstationary disk to lock said guide in inoperative position, a pair ofsheet-metal controllevers each one of which is secured to its respectivelatch, said control-levers disposed so that a manual shifting of onelever will release its latch and move the guide into inoperativeposition and a manual shifting of the other lever will release its latchand move the guide into operative position, and spring means foryieldingly maintaining the respective latch in its stop-notch.

:HANS HACKLANDER.

